[
    {
        "inputs": [
            { "internalType": "address", "name": "token", "type": "address" },
            { "internalType": "address", "name": "to", "type": "address" },
            { "internalType": "uint256", "name": "funds", "type": "uint256" },
            { "internalType": "uint256", "name": "minAmount", "type": "uint256" }
        ],
        "name": "buyToken",
        "outputs": [],
        "stateMutability": "payable",
        "type": "function"
    },
    {
        "inputs": [
            { "internalType": "address", "name": "token", "type": "address" },
            { "internalType": "uint256", "name": "amount", "type": "uint256" },
            { "internalType": "uint256", "name": "minFunds", "type": "uint256" }
        ],
        "name": "sellToken",
        "outputs": [],
        "stateMutability": "nonpayable",
        "type": "function"
    },
    {
        "inputs": [{ "internalType": "address", "name": "to", "type": "address" }],
        "name": "buyQuota",
        "outputs": [{ "internalType": "uint256", "name": "quotaAdded", "type": "uint256" }],
        "stateMutability": "payable",
        "type": "function"
    },
    {
        "inputs": [],
        "name": "buyFeeRate",
        "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
        "stateMutability": "view",
        "type": "function"
    },
    {
        "inputs": [],
        "name": "sellFeeRate",
        "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
        "stateMutability": "view",
        "type": "function"
    },
    {
        "inputs": [{ "internalType": "address", "name": "account", "type": "address" }],
        "name": "isFeeExempt",
        "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
        "stateMutability": "view",
        "type": "function"
    },
    {
        "inputs": [{ "internalType": "address", "name": "user", "type": "address" }],
        "name": "getUserFreeQuota",
        "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
        "stateMutability": "view",
        "type": "function"
    }
]